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BIO 353 Exam 1 Cell Biology EXAM 2025 QUESTIONS AND CORRECT ANSWER
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BIO 353 Exam 1 Cell Biology EXAM 2025 QUESTIONS AND CORRECT ANSWER
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BIO 353 Exam 1 Cell Biology EXAM 2025 QUESTIONS ANDCORRECT ANSWER
Each macromolecule is a polymer formed from small molecules that are linked together by:
A)Covalent
B)Hydrogen Bonding
C)Ionic Bonding
D)All the above - answer>>>A)Covalent
The Chemistry of Life is special in that:
A) Molecules are mainly carbon compounds
B) Chemical reactions depend on narrow range of temperatures
C) Macromolecules- polymeric molecules
D) Regulated and they require an input of energy
E) All the Above - answer>>>E) All the Above
Which of the following is NOT of the four non-covalent bonds?
A)Ionic
B)Van der Waals
C)Peptide Bonding
D)Hydrophobic Effect
E)Hydrogen Bonding - answer>>>C)Peptide
The function of a protein structure depends on what:
,A)Size of the protein
B)Order of AA
C)Non-covalent bonding
D)Hydrogen Bonding - answer>>>B)Order of AA
Domains are discrete regions of folded structure frequently associated with specific functions.
A)True
B) False - answer>>>A)True
The biological function of a protein depends on what?
A) Size
B) Mass
C)Specificity - answer>>>C) Ability to bind to other molecules (specificity)
Effective binding requires many bonds to be formed simultaneously
Surface contours of the liana fit ver closely to the protein
What are the domains of antibodies that allow high specificity?
A) 2 Heavy Chains
B) 2 Light Chains
C) 2 Binding Sites
D) A) and B)
E) A), B), and C) - answer>>>E) A), B), and C)
, Protein function is regulated by:
I. Cells control expression of gene and degradation of protein
2. Enzymatic activity through enzymatic level regulation
3. Allosteric regulation and covalent modification
A)True
B) False - answer>>>B) False
Enzymatic activity through substrate level regulation
What are the major classes of lipids in the membrane?
A)Phospholipids
B)Glycolipids
C) Sterols (Cholesterol, Phytosterols,etc)
D)Fatty Acids
E) All the above except D - answer>>>E) All the above except D
Cholesterol is present in all animal and plant membranes
A)True
B)False - answer>>>B) False
Present only in animal membranes, and fits between phospholipids especially those with
unsaturated fatty acid tails.
What are the movements of phospholipids within the membrane?
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